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Note 7 - Income Taxes - Current and Deferred Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current: |  |  |
Federal | $ 22,904 | $ 134,284 | $ 191,422
State and local | 26,738 | 23,456 | 21,871
Current income taxes, total | 49,642 | 157,740 | 213,293
Deferred: |  |  |
Federal | 97,670 | (261,592) | 45,846
State and local | 3,921 | 12,828 | 4,568
Deferred income taxes, total | 101,591 | (248,764) | 50,414
Total tax expense/(benefit) | $ 151,233 | $ (91,024) | $ 263,707

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